DE60216231T2 - CONNECTOR CONNECTION FOR MEDICAL DEVICE - Google Patents

Abstract

A releasable medical device connector (10) comprises a connector fitting with a spin nut which connects to an adaptor. The connector fitting has at least one radially extending member (34) with a variable radius cross section. The spin nut (50) is disposed upon the connector fitting proximal of the radially extending member and is both axially slidable and rotatable upon the elongated body (20) of the connector fitting. A screw thread within a proximal portion of the spin nut is used to secure the tapering portion of the connector fitting to an external thread disposed upon the adaptor. To release the connector, the spin nut is unscrewed from the adaptor and slid so that a distal receptacle of the spin nut engages the radially extending member of the connector fitting.

Description

Background of the invention

Field of the invention

The This invention relates generally to a connector fitting for a medical device Line and in particular a detachable Connector for use on an elongated medical Items.

State of the art

at In the medical treatment of patients, it is often desirable that the medical staff has some form of access to the vascular system of the patient, to supply fluids to the bloodstream or to be taken. If such access over a certain period of time is required, it is common To insert a catheter into the patient's bloodstream to allow a reusable access, for example Drugs and / or fluids directly into the patient's bloodstream leave. It may be desired be such an intravenous Catheter during the entire treatment at the relevant site in the patient to keep it, to avoid having to repeat new catheters introduced Need to become.

at intravenous Applications, the catheter is generally short and indicates a Finish a Luer connector, which is suitable for attachment to a suitable for other medical management. Such a connector can also have a union nut to lock the medical lead to the catheter. In this way, the same catheter with different medical Leads connected and disconnected from these to the medical Replace lines without the need for multiple intravenous catheters introduce.

To Use over however, the luer connection may take an extended period of time jam between the medical line and the catheter fitting and difficult to solve. In particular, the force involved in locking the medical Line with the catheter connector by means of the union nut was applied, the medical management with such great force in Press the catheter that is the medical line and the catheter unlocking the union nut not solve. Furthermore The fluid dries between the surfaces of the components of the Luer connection one, so that the Liability between the components is further aggravated.

Under such circumstances would have to Medical professional twisting or dropping the medical lead Pull the catheter away. The union nut has a larger diameter and is easier to grasp than the medical line itself. Therefore, on the Luer connector, a mechanism for power transmission from the union nut be provided for medical guidance to solve the medical To simplify conduction from the catheter. An example of such a union nut for use on a Luer connector is disclosed in U.S. Patent 5,620,427 to Werschmidt et al. disclosed.

The However, wedges provided on the Werschmidt device can only torque between the union nut and medical management. The wedges also do not prevent the longitudinal movement of the nut in the proximal direction. As a result, the union nut Walk along the medical route, so that medical staff is needed to to locate the mother and get back to the appropriate one Screw in position when the medical line is attached or solved shall be.

Because of the importance and continued use of the Luer connectors there is a persistent between medical lines and intravenous catheters Need for improvements on such detachable luer connectors.

GB-A-2 146 405 relates to a connection device for an intravenous fluid delivery device set, comprising: a first part having a passage for a fluid and a longitudinal axis, a second part with a passage for a fluid and a longitudinal axis and a cone-shaped A deployment device constructed and constructed with respect to each part is arranged that a fluid-tight engagement between the parts can be made.

DE-C-198 33 181 describes a lockable connector which is a primary connector with a primary Plug section and a secondary one joint having. A plug section is a father's piece and the other a mother's piece. The primary joint has a nut for locking the screw. The mother and her joint have rotary coupling parts, so that, When the nut is unscrewed, the primary connector relatively to her turns. The ring end face of the second connector has ribs.

US-A-6 152 913 relates to a protective cap for use with a Luer locking system. The protective cap has a tubular body with an inner surface and a closed end. An internal thread is formed on the inner surface, which is sized and shaped so that it with an external thread on the zugeord Neten luer component can engage. A crimping thread is formed adjacent to a portion of the internal thread and projects radially inward from the inner surface of the protective cap.

Summary of the invention

One Aspect of the invention relates to a connector fitting, which is suitable with a corresponding adapter to interact with two medical components to couple with each other. For example, the connector fitting may be in one mode be operated in which there is an adapter on a distal Side (i.e., away from the patient) of an intravenous indwelling catheter can be an intravenous couple medical line with the adapter. The connector fitting can however, either at the inflow point or drainage side the resulting connection are arranged.

The Connector fitting has an elongated body on. A rotatable union nut is arranged on the connector fitting body and is also longitudinal along the length of a Slidable portion of the connector fitting.

One the radially extending part is disposed on the connector fitting body. The union nut has a version for it is configured to receive the radially extending part when the union nut in their extreme distal Position is pushed. The connector system is defined in the independent claims.

One potential Feature of the connector fitting includes that this radially extending portion of a multi-sided (eg, in general hexagonal) outer cross section Has. The socket of the union nut has a cooperative shape around the radially extending one Part to pick up and engage. The intervention between the union nut and the radially extending part transmits rotational forces between these components, when one of them is turned.

One further possible Feature of the connector fitting is in that the Version of the union nut has a shape that receives the radially extending part of the connector fitting, and Furthermore has a wall which bears axially against the radially extending part, if the union nut is engaged with the part. This allows the transmission of an axial force between the union nut and the connector fitting, when the two components are engaged.

Corresponding a particularly preferred mode is a connector fitting with a union nut used to connect a medical lead with an adapter. The connector fitting has a elongated body with a proximal tapered or cone-shaped Portion and a radially extending portion distal to the proximal cone-shaped Section is arranged on the elongated body. The elongated one body has a lumen with connections on the proximal and distal side of the connector fitting stands. The radially extending part has a cross section with variable radius. The union nut is proximal on the connector fitting is arranged from the radially extending part and is on the elongated body the connector fitting both axially displaceable and rotatable. The union nut also has a Holder formed on its distal side. To one Force on the connector fitting, is the union nut moved in the distal direction, so that the version of the nut engages with the radially extending part of the connector fitting. If the union nut and the connector fitting engaged can, the medical management by turning and / or pulling at the union nut be moved relative to the adapter (in the rotational and / or axial direction).

Corresponding In another preferred mode, a connector fitting has one elongated body with at least one radially extending part with at least a contact surface. A union nut is also used, which has a generally tubular body, the slidable and rotatable on the elongated body of the Connector fitting arranged is. desirably is the radius difference between the outer radius of the union nut and the maximum radius of the radially extending portion is smaller as the radius difference between the maximum radius of the radial extending part and the outer radius the union nut.

A preferred method of using this mode of connector fitting to securely attach a medical lead to the adapter involves inserting the tapered portion of the connector fitting into the adapter. The connector is then secured by sliding the union nut to the proximal position and rotating it on the fitting so that the corresponding screw threads of the adapter and the union nut engage. To loosen the connector fitting from the adapter, the union nut is unscrewed from the adapter and displaced distally so that the socket of the union nut engages the radially extending portion. The union nut is then turned and pulled. This movement is due to the engagement between the socket and the radially it transferred to the body of the connector fitting piece to remove the tapered portion of the connector fitting from the adapter.

One Another aspect of the invention relates to a connector system for connection of two medical components (eg for connecting a medical Lead and a catheter). The connector system has a connector fitting, such as described above, and a medical line adapter (e.g. a catheter fitting). The connector fitting and the Medical line adapters are configured to engage to connect to a coupling between two medical components manufacture. In one mode, the connector fitting and the medical adapters interlocking threads on these components couple together; however, you can various aspects of the present invention without such Luer connection be put into practice.

The Connector system can be used with an anchoring system. This combination allows a secure connection between the medical components and allows a secure anchoring of the connection with the patient. The anchoring system has a holder that receives at least a portion of the connector fitting. The holder has at least one socket (eg a slot) which adapted for that to receive radially extending part on the connector fitting, about a longitudinal movement (i.e., axial movement) of the fitting with respect to to prevent the holder. In a preferred mode, the Holder several versions, which are arranged in the longitudinal direction, to provide multiple positions in which the connector fitting within of the holder can be positioned. This offers the possibility the connector fitting with respect coarsely align on the holder before the connector fitting in the Holder inserted becomes. The anchoring system may also have an on kerauflage, which adheres to the skin of the patient and attached to the holder is.

One Another aspect of the invention relates to the combination of the above described connector fitting with a holder. The radially extending part of the connector fitting is configured for to interact with a slot or other socket of the holder, when the radial part is not engaged with the union nut. Such a holder may have at least one or more slots sized for it are to cooperate with the radially extending part of the connector fitting, around the connector fitting in the right one Hold position with respect to the holder. The holder can also Part of an anchoring system, which is also a basic edition has, on which the holder is arranged.

Brief description of the drawings

The mentioned above and further features of the invention will be described below with reference to FIG the drawings of preferred embodiments of the present Connector fitting and connector system described. The illustrated embodiments are intended to illustrate the invention illustrate, but not limit. The drawings contain the following figures:

1 Figure 15 is a perspective view of a connector system having a connector fitting configured in accordance with a preferred embodiment of the invention with the connector fitting and an adapter of the connector system separated from one another.

2 is a perspective view of the connector system in 1 wherein the connector fitting and the adapter are connected together.

3 is a perspective view of the connector fitting in 1 with a partially cut union nut of the fitting.

4A is a similar view as the one in 3 and shows how the union nut is engaged with a radially extending part of the connector fitting.

4B is an enlarged view of the area within the circle 4B-4B in FIG 4A and shows how the radially extending part contacts a wall of the union nut socket.

5A is a perspective view of a distal end of the nut and shows the socket.

5B is an enlarged view of the distal end of the nut and represents the version.

6 FIG. 12 is a sectional view of the connector fitting, taken along the line 6-6 in FIG 3 , and represents a preferred form of the radially extending part.

7A is a sectional view of an additional preferred form of the connector fitting.

7B is an enlarged view of a distal end of a cap nut, which represents a further preferred form of the union nut and the socket.

8A FIG. 12 is a perspective view of a distal end portion of a connector fitting having radially extending portions configured in accordance with another preferred form; and FIG 8B Figure 11 is a perspective view of the distal end of a cap nut with correspondingly shaped sockets for receiving the radially extending parts.

9A FIG. 12 is a perspective view of a distal end portion of a connector fitting having radially extending portions configured according to an additionally preferred form; and FIG 9B Figure 11 is a perspective view of the distal end of a cap nut with correspondingly shaped sockets for receiving the radially extending parts.

10A FIG. 12 is a perspective view of a distal end portion of a connector fitting having a radially extending portion configured in accordance with another preferred form; and FIG 10B is a perspective view of the distal end of a cap nut with accordingly shaped sockets for receiving the radially extending part.

11A FIG. 12 is a perspective view of a distal end portion of a connector fitting having a radially extending portion configured in accordance with an additional preferred form; and FIG 11B is a perspective view of the distal end of a cap nut with a correspondingly shaped socket for receiving the radially extending portion.

12A FIG. 12 is a perspective view of a distal end portion of a connector fitting having a radially extending portion configured in accordance with an additional preferred form; and FIG 12B is a perspective view of the distal end of a cap nut with a correspondingly shaped socket for receiving the radially extending portion.

13 is a perspective view of a cap nut in yet another form, with a connection system according to 14 can be used below.

14 FIG. 13 is a perspective view of a connector system configured in accordance with another preferred embodiment of the invention. FIG.

15 FIG. 16 is a perspective view of the connector fitting of FIG 1 shown system with an exemplary anchoring system.

16 is a perspective view of the connector system in 1 when used with an exemplary medical lead anchoring system according to 15 ,

Full Description of the Preferred Embodiments The following Description and the examples illustrate in detail a preferred embodiment of the present connector system associated with use with an exemplary medical line and an intravenous catheter is disclosed. However, the principles of the present invention are not on intravenous Catheter restricted. In view of the present disclosure, it will be understood by those skilled in the art that this described releasable Connector system applied to other types of medical articles can be, including and without limitation on catheter and fluid delivery or drainage hoses. One Professional can also additional Applications for find the devices and systems disclosed herein. consequently is the illustration and description of the connector system in connection with the medical line and the catheter only exemplary for a possible Application of the connector system.

To facilitate the description of these components of the connector system (see 1 ), the following coordinate terms are used. A "longitudinal axis" is generally parallel to the axis of the connector fitting 10 , A "transverse axis" is perpendicular to the longitudinal axis and is generally parallel to the plane of the skin of a patient on which these medical leads are mounted. A "transverse axis" extends both perpendicular to the longitudinal and to the transverse axis. In addition, as used herein, "the longitudinal direction" refers to a direction substantially parallel to the longitudinal axis; "the transverse direction" denotes a direction substantially parallel to the transverse axis; and "the transverse direction" denotes a direction substantially parallel to the transverse axis.

Of the Term "axial" as used herein denotes the axis of medical management and is therefore in the essentially synonymous with the term "longitudinal" as used herein. Similarly, the terms "proximal" and "distal" that are used to describe the present anchoring system, constantly at used in the description of the exemplary applications. there be proximal and distal with respect to the middle of the body of the body Patients used. Thus, the proximal end of a device the section that is closer to the middle of the body the patient is, whereas the distal end of a structure is the end which is further away from the center of the patient's body.

The Terms "upper", "lower", "upper", "lower" and the like, that too used to describe the present anchoring system With reference to the Darge presented orientation of the embodiment used. A detailed description a preferred embodiment of the Anchorage system and their associated application procedures follow below.

Overview

As in 1 As shown, the illustrated and described embodiment of the medical lead connector system includes a connector fitting 10 and an adapter 12 on, for example, an adapter for an intravenous catheter, as in 1 shown. The connector fitting 10 is preferably at the proximal end 15 an exemplary medical line 14 arranged. The medical management 14 may be associated with devices suitable for introducing or removing fluid from the patient, for example, a drip bag, a dialysis machine, a blood control device, or any other device known to those skilled in the art.

As for the illustrated use of the connector fitting and the connector system, the catheter adapter is for connecting an intravenous line to an intravenous catheter 12 positioned at the distal end of a short percutaneous needle inserted proximally into the patient (not shown). It may be desirable to use the adapter 12 and leave the needle in position on the patient during the treatment while various medical lines 14 via the connector system with the adapter 12 get connected. As a result, a physician can advantageously avoid the introduction of multiple catheters and multiple needle sticks to the patient for every other medical line that is to be connected. The adapter 12 desirably has an elongate tubular tapered region 13 with a central lumen in fluid communication with the lumen of the needle.

The adapter 12 can also advantageously an external thread 18 on the outside surface of the tubular portion 13 of the adapter 12 is arranged. The screw thread 18 Can be used in conjunction with a union nut (described below) of the connector fitting 10 used to medical management 14 and the adapter 12 securely connect with each other. In addition to a screw thread, other means can be used to attach the adapter 12 to connect with the connector fitting (as described below). These may include, but are not limited to, trunnion / groove arrangements, pawl / detent arrangements, and other such systems known to those skilled in the art.

The connector fitting 10 has an elongated body 20 on, the distal at the proximal end 15 the medical management 14 is attached. The connector fitting 10 also has a proximal section 30 which is desirably tapered along at least part of its longitudinal dimension, thus the outermost proximal portion of the tubular conical portion 13 of the adapter 12 fits. The conical proximal section 30 of the connector fitting 10 preferably also has a centrally located lumen that communicates with the lumen of the medical conduit 14 communicates.

If the proximal section 30 of the connector fitting 10 in the tubular section 13 of the adapter 12 is inserted, the lumen of the connector fitting is disposed in fluid communication with the lumen of the adapter. This allows fluid communication between the medical line 14 and the patient, how out 2 understandable.

As in 1 also has the connector fitting 10 at least one radially extending part 34 located on a distal area of the elongated body 20 of the fitting 10 is arranged. Note that it may be advantageous if the radially extending portion extends completely around the circumference of the connector fitting 10 stretches around, as in 1 shown. By a radially extending part that extends completely around the circumference of the fitting 10 extends around, can be the fitting piece 10 more easily attached to a holder (as described below), with only a coarse alignment between the fitting and the holder is required. It also allows a part 34 which extends over the entire circumference to connect the fitting and the holder with each other, without having to pay attention to a rotational movement about its own axis, which can perform the fitting, as the part extends in each circumferential position of the fitting. A second radially extending part 44 can also be distally over the elongated body 20 be arranged, such as additional radial parts (not shown). The second radially extending part 44 may have a similar shape as the first radially extending part 34 or may have other shapes (eg, circular).

A union nut 50 is on the connector fitting 10 around the elongated body 20 of the fitting 10 arranged. The union nut 50 has a substantially cylindrical shape and may rest on the connector fitting 10 move. The union nut 50 is for both a rotational movement about the axis of the connector fitting 10 as well as for longitudinal movement in both the proximal and distal directions along the length of the elongated body 20 of the fitting 10 suitable. The range of longitudinal movement of the union nut is from the radially extending part 34 in the distal direction and from a retaining rib 32 limited in the proximal direction. The union nut also has internal threads, which are indicated by dashed lines in 1 is shown.

If, as in 2 shown the proximal section 30 of the connector fitting 10 in the tubular section 13 of the adapter 12 is inserted, the union nut 50 moved in the proximal direction and rotated so that it with the screw thread 18 of the adapter 12 can engage and the connector fitting 10 with the adapter 12 locked.

Connector fitting and union nut

3 shows the connector fitting 10 with a sectional view of the union nut 50 in the appropriate position on the elongated body 20 of the fitting 10 , The union nut 50 is desirably arranged so that the central axis of the nut 50 generally the same as the central axis of the elongated body 20 of the connector fitting 10 , The union nut 50 may be about the axis of the connector fitting 10 turn and slide along it.

The union nut 50 desirably has an internal thread 28 on the inner surface of the union nut 50 is arranged. This screw thread 28 occurs with the screw thread 18 of the adapter 12 engaged when the adapter 12 at the connector fitting 10 is attached. The distal wall 58 the union nut 50 is also in the cut section in 3 recognizable. This wall 58 forms a distal end of the union nut 50 ,

As stated above, the union nut 50 in 3 shown in a position along the length of the elongated body 20 of the connector fitting 10 is neither extremely distal nor extremely proximal. 4A shows the union nut 50 and the connector fitting 10 with the union nut 50 in an extremely distal position. If the union nut 50 is in the distal position, is the wall 58 the union nut 50 positioned so that the distal surface 61 the version 60 the union nut 50 on the proximal wall 36 the radially extending part 34 is applied. This is clearer in 4B to see which is an enlarged view of the section in 4A designated 4B-4B. In this position takes the version 60 at least a portion of the radially extending portion 34 on.

Regarding 4B it can be seen that the wall 58 the union nut 50 inward in the direction of the axis of the union nut 50 extends and with an edge 64 that is different from the wall 58 extends inwards, ends. The inner surface of the edge 64 forms the opening 66 (please refer 5B ) in the middle of the union nut 50 through which the elongated body 20 of the medical cable fitting 10 passed through. The opening 66 is preferably slightly larger than the diameter of the elongated body 20 ,

Because the edge 64 is narrower in the axial direction than the wall 58 , like out 4B can be seen, are the distal surface 61 the edge 64 and the distal surface of the wall 54 at different longitudinal positions along the axial length of the union nut 50 , Because the distal surface 54 the Wall 58 is located more distal than the distal surface 61 the edge 64 , a recess is formed, which is the socket 60 the union nut 50 forms. If the union nut 50 in the extreme distal position, as in 4A and 4B shown is the radially extending part 34 in the version 60 inserted. If the union nut 50 is in the distal position, takes the composure 60 the union nut preferably about at least one third of the axial length of the radially extending part 34 and more preferably about two thirds of the axial length of the radially extending portion 34 on.

As in 5A and 5B presented, has the text 60 a cross-sectional shape that forms a twelve-pointed star. As in 6 can be seen, has the radially extending part 34 a cross-sectional shape that is substantially hexagonal. Other cross-sectional shapes can be used for both the version 60 as well as for the radially extending part 34 be used, but it is desirable that the cross-sectional shape of the radially extending portion 34 in the cross-sectional shape of the socket 60 fit. More desirably, the cross-sectional shape of the radially extending part 34 and the version 60 are sized so that the largest radius of the part 34 is greater than the smallest radius of the socket when the part 34 within the version 60 located.

If a maximum radius of the part 34 is greater than the minimum radius of the socket 60 , the walls of the socket exert a torque on the part 34 off, if the union nut 50 is rotated while it is in the distal position. In this way, a rotational movement exerted on the cap nut located in the distal position is rotationally transmitted to the connector fitting 10 transferred, so that the union nut 50 in trying to get the connector fitting 10 from the adapter 12 to be resolved can.

Regarding 7A and 7B It should be noted that it may also be desirable to have the maximum radius R _{2 of} the radially extending portion 34 (please refer 7A ) due to the size closer to the external radius of the union nut (in 7B as R ₃ ) is the radius R ₂ at the radius of the elongated body 20 (in 7A as R ₁ ) of the fitting 10 , This increases the radial extent of the radially extending part 34 away from the from the surface of the elongated body 20 and provides a surface on which the socket of the union nut 50 better hold can.

As in 5B shown, there is when using a socket 60 with a twelve-pointed star shape and a part 34 with a hexagonal shape (as in 6 shown) twelve different positions in which the version 60 in a snug fit over the part 34 can be moved. However, those skilled in the art will recognize that only a single position must be available in which the socket 60 on the part 34 fit, and it is not necessary that such a fit is flush. As long as the part 34 fits in the cross section of the socket and the maximum radius of the part 34 is greater than the minimum radius of the socket 60 As stated above, it is possible to have a torque from the union nut 50 on the connector fitting 10 to transfer if the mother 50 in the outermost distal position.

In addition to providing a mechanism for transmitting torque between the union nut 50 and the connector fitting 10 can the version 60 also a distally directed axial force on the part 34 exercise. If the union nut 50 in the distal position, as in 4A and 4B shown, becomes the distal surface 61 the edge, which is the face of the socket 60 forms, against the proximal wall 36 the radially extending part 34 pressed. Due to this contact, any force exerted in the distal direction will be transmitted to the part via the contact between these surfaces 34 and the connector fitting body 20 transferred when the union nut 50 already in the distal position.

This interaction between the distal surface 61 the edge 64 and the radially extending part 34 also prevents migration of the union nut 50 distally away from the end of the connector fitting 10 and on the medical line 14 , This leaves the union nut 50 on the connector fitting 10 So that it is no longer necessary that the medical staff must locate a union nut, possibly from the fitting 10 has moved away. This allows a faster and more reliable release of the connector fitting 10 from the catheter adapter 12 ,

variations

As indicated above, different shapes may be used for the socket 60 and the radially extending part 34 be used so that the union nut 50 a force on the connector fitting 10 can transfer. Several variations of union nut design 50 and parts 34 are in 8A to 12B shown. In all these figures are the union nut 50 and the elongated body 20 of the connector fitting 10 for the sake of clarity, coincidentally designated. Except as noted below, the in 8A to 12B shown embodiments substantially the same structure and the same use as the above with respect to 1 to 6 have described embodiment. For example, all designs have a distal wall 61 the edge 64 on, axially against the radially extending part 34 pushes to axial force between the union nut 50 and the radially extending part 34 transferred to.

A variation of the radial part is in 8A . 9A and 10A shown. Instead of a continuous hexagonal part, as in 4A shown, the radial part has the form of protrusions 40 extending radially from the elongated body 20 of the connector fitting 10 extend. These projections 40 do not enclose the entire circumference of the elongated body 20 but desirably are spaced approximately equally around the circumference with spaces between them.

8A shows the distal end of a connector fitting 10 that a couple of tabs 40 used for each radially extending part. As can be seen, several sets of protrusions 40 in different axial positions along the length of the elongated body 20 to be available. This corresponds to the use of a plurality of radially extending parts, as shown in FIG 4A shown embodiment are shown.

A union nut 50 , which is configured in conjunction with the connector fitting 10 in 8A to be pressed is in 8B shown. This union nut 50 is substantially similar to the structure described above, except for the cross-sectional shape of the socket 60 , The version 60 is desirably configured so that its cross-section has a shape into which the projections 40 the radially extending part 34 of the connector fitting 10 can be inserted. As in 8B can be seen, this shape may take the form of a circular interior with a handle recesses 70 beyond the scope of the wording 60 distributed, accept. The engaging depressions 70 preferably have a radius that is greater than that of the inner region and also greater than the radius of the projections 40 of the fitting 10 ,

The engaging depressions 70 are desirably each larger than the protrusions 40 of the fitting 10 , The engaging depressions 70 and the projections 40 are also desirably around the circumference of the nut 50 and the fitting 10 equally spaced. This allows the union nut 50 in 8B distally along the elongate body 20 of the connector fitting 10 in 8A moves, and the projections 40 can get into the engaging pits 70 the union nut 50 be inserted. Because of the double rotational symmetry of the arrangement, there are two positions in which the socket 60 the projections 40 accepts.

In this distal position, the union nut 50 a distal force on the protrusions 40 as well as the union nut in the earlier embodiment exert a distal force against the radially extending part 34 exercised. Because the radius of the projection 40 and the elongated body 20 is different, also creates a radial wall 42 at the end of each projection. A similar radial wall 72 arises on the union nut 50 at the end of each intervention recess 70 ,

If the union nut 50 is in a distal position, brings every turn of the nut 50 the radial wall 72 the union nut 50 ultimately with the radial wall 42 at the end of at least one of the protrusions 40 in contact. This can cause a torque from the union nut 50 on the fitting piece 10 transferred to the release of the connector fitting 10 from the adapter 12 to enable.

Note that it is not necessary that the fit between the protrusions 40 and the engagement wells 70 is particularly flush. For example, in 8A projections 40 to be seen, which extend over an arc of about 90 °. Analogously, in 8B engaging recesses 70 to be seen, which extend over an arc of about 90 °. However, if the projections 40 on the elongated body 20 only extended over a circular arc of about 75 °, the socket would 60 the projections 40 still accept, and the same union nut 50 would still have the same distally directed force and torque on the connector fitting 10 exercise.

As long as the projections 40 the radially extending part 34 in the version 60 the union nut 50 fit in and the largest radius of the protrusions 40 is greater than the smallest radius of the socket 60 , the union nut acts 50 with the fitting piece 10 together to transmit the desired distally directed force and torque. If the projections 40 however, are significantly smaller than the engaging recesses 70 , there is some clearance in the fit between the radially extending part 34 and the version 60 , This means that the union nut 50 when rotated, can rotate over a circular arc before a radial wall 72 the intervention pits 70 with a radial wall 42 a projection 40 comes into contact.

9A and 9B show a connector fitting 10 and a union nut 50 that are essentially similar to those in 8A and 8B are shown and operated, with the exception that there are three projections 40 for each radial part 34 There are three corresponding engagement indentations 70 in the version 60 gives. Such an arrangement operates in substantially the same way as the one described above. In the illustrated arrangement, all engagement recesses extend 70 and the projections 40 over a circular arc of about 60 °. Note that it is desirable that the engagement recesses 70 extend over a slightly larger circular arc than the projections 40 , so that the projections 40 easier in the engaging recesses 70 can insert if the union nut 50 is in the distal position.

10A and 10B make a connector fitting 10 and a union nut 50 which are essentially similar to those in 8A to 9B are shown and operated, with the exception that there are four projections 40 for each radial part 34 There are four corresponding engagement indentations 70 in the version 60 gives. In contrast to the previous embodiments, the projections 40 and engaging depressions 70 of the elongated body 20 and the union nut 50 not uniform in terms of the spaces between them. The projections 40 and the engaging depressions 70 extend over a circular arc of only about 10 °.

Note that with some combinations it is also possible to use a union nut 50 with a fitting 10 to use that a different number of protrusions 40 has, as the union nut 50 engaging recesses 70 Has. For example, the connector fitting could 10 in 10A with four tabs 40 Each of which extends over 10 ° and is spaced 90 ° apart, with a union nut 50 as in 8B used only two engaging depressions 70 has the 180 ° apart, as long as each engagement recess extends over a circular arc of more than about 100 °.

In this way, the fit between the engagement recess 70 and the projections 40 still pretty flush; However, there are now four positions in which the radial part 34 in the version 60 fits, in contrast to the two positions in which the nut 50 the projections of the fitting 10 in 8A can accept.

Another configuration of the radially extending part 34 and the version 60 is in 11A and 11B shown. Here is the radial part 34 a series of twelve curved projections 40 on, covering the entire circumference of the elongated body 20 extend. The version 60 the union nut 50 has a set of engaging pits 70 with a shape that the projections 40 flush picks up and engages. The skilled artisan will recognize that neither the exact profile of the projections 40 must be, as shown in the figure, still twelve projections must be present. However, under certain circumstances, it may be desirable for the number of protrusions 40 with the number of engagement recesses 70 matches, so that the radial part 34 in the version 60 can insert.

Unlike the in 8A to 10B The embodiments shown have the projections 40 and the engaging depressions 70 in this embodiment an arcuate profile. As a result, there are no radial walls, neither in the socket 60 still at the radial part 34 , However, since the profile of both the projections 40 as well as the intervention pits 70 varies along its length in the radius, is between the socket 60 and the radial part 34 Contact made for a torque from the union nut 50 on the elongated body 20 of the adapter can be transmitted.

12A shows a connector fitting 10 with a radial part 34 with projections 40 having substantially the same profile as the socket 60 the union nut 50 in 5A and 5B , Such a fitting 10 can be considered a variation of in 4A shown fitting 10 with the union nut 50 out 5A and 5B be used. 12B shows a union nut 50 with a hexagonal version 60 with substantially the same profile as the radial part 34 of the fitting 10 in 4A , This union nut 50 can with the adapter in 4A as a variation of the union nut 50 in 5A and 5B be used.

catheter adapter and union nut

Another arrangement for a medical lead connector system is in 13 and 14 shown. The union nut used in such a system 50 is in 13 is shown and is essentially the same as the one in 12B shown union nut 50 , The union nut 50 however, it is used differently, as in 14 shown.

14 shows a medical line adapter 210 that with the proximal end of a medical lead 14 connected is. The medical line adapter 210 has an elongated body 220 and a proximal section 230 on. The elongated body 220 is at a medical administration 14 appropriate. An external thread 200 is on the outer surface of the elongated body 220 arranged. This adapter 210 has the same male part of the connector system incorporated in the connector fitting 10 in 1 is provided.

Another connector fitting 212 is at the distal end of a second medical lead 16 shown. This fitting 212 represents the female part of the connector system that comes from the adapter 12 in 1 is pictured. The union nut 50 is along the outside of the tubular portion of the connector fitting 212 and not along the elongated body 220 of the medical cable adapter 210 arranged. In addition, the radially extending part 234 also on the connector fitting 212 arranged.

In essence, the in 14 illustrated embodiment, the union nut 50 and the radial part 234 on the mother part 212 the connector system and not on the male part, as shown in previous figures. The operation of the system is substantially the same with such an embodiment, however, the union nut 50 now used to translational and rotational forces on the receiving part 212 of the connector system.

The features with respect to the radial part 34 when used on the in 1 and 2 illustrated connector fitting 10 may also be disclosed to the use of the radial part 234 on the connector fitting 212 be applied. This completes the various cross-sectional shapes of the frames 60 and the radial part 34 , such as the in 8A to 12B and other such features known to those skilled in the art.

business

In operation, how can 1 and 2 As can be seen, a connector system according to an embodiment of the invention may be used to form a connector fitting 10 on an adapter 12 firmly to arrange and to loosen the connector fitting 10 from the adapter 12 to simplify if necessary. The operation of the system will be with reference to the in 1 and 2 illustrated embodiment of the device described. However, those skilled in the art will appreciate that the same operation can be desirably applied to any of the variations described herein.

When connecting the medical line 14 with the adapter 12 the healthcare professional first inserts the proximal end 30 of the connector fitting 10 in the tubular section 13 of the adapter 12 one. The union nut 50 is then pushed in the proximal direction until the thread 28 the union nut 50 the thread 18 of the adapter 12 touched. The union nut 50 can then be rotated to the connection between the connector fitting 10 and the adapter 12 to arrange firmly. This represents the in 2 shown configuration ago.

To the connector fitting 10 from the adapter 12 to solve, the union nut 50 Turned until the screw thread 28 the union nut 50 from the screw thread 18 of the adapter 12 is disconnected. The union nut 50 then becomes distal along the length of the elongated body 20 of the connector fitting 10 postponed until the version 60 on the distal section of the union nut 50 against the radially extending part 34 of the connector fitting 10 is pressed.

The union nut 50 is then rotated with the distal pressure on it (with respect to the connector fitting 10 ) is maintained until the radially extending portion 34 in the version 60 the union nut 50 slides. The health professional can then contact the union nut 50 Turn and pull, and the turning and pulling force is on the connector fitting 10 transfer. It may, while the adapter 12 is held in place, the connector fitting 10 from the adapter 12 be removed without the connector fitting 10 to take directly.

Connector fitting and anchoring system

15 and 16 illustrate an anchoring system 300 for use with a connector system 10 as disclosed above. The connector system 10 can be in the appropriate position on a holder 302 of the anchoring system 300 be locked. The holder 302 is configured for the connector fitting 10 to arrange firmly. The holder 302 is on a basic pad 304 desirably can be used to anchor the holder on the skin of a patient.

holder

The holder 302 generally has the shape of a parallelepiped and forms a central channel 306 between a pair of opposite longitudinal walls 308 is arranged. The central channel 306 extends through the holder 302 along an axis generally parallel to the longitudinal axis of the holder 302 is.

The central channel 306 has a generally circular cross-sectional shape which is shortened at the upper end to a generally U-shaped channel having an upper opening 310 to build. The central channel 306 has a diameter that is so large that it is the radial part 34 of the connector fitting 10 receives. In a preferred embodiment, the diameter of the central channel is correct 306 generally with that of the radial part 34 match or is slightly larger.

In cross-section, the central channel extends 306 by a more than 180 ° arc around the channel axis, so that the transverse length of the opening 310 smaller than the diameter of the central channel 306 , In an exemplary embodiment, the central channel extends 306 by a circular arc of about 200 ° around the canal axis.

The channel axis is relative to the surface of the base pad 304 desirably angled. An entrance angle between the surface of the base pad 304 and the channel axis is formed is desirably less than 45 °. The angle is desirably between 0 ° and 30 °. In an exemplary embodiment for intravenous use, the angle is preferably about 7 °. In another exemplary embodiment for arterial use, the angle is preferably about 22 °. In a further exemplary embodiment for peripherally inserted central catheter (PICC), the angle is preferably equal to 0 °.

Every wall 308 of the owner 302 has a uniform set of slots 312 on. Although only a single slot 312 must be used, makes use of at least two slots 312 a coarse alignment between the holder 302 and the fitting piece 10 when pressing the radial part or the parts of the fitting in the slots 312 required. Most preferably, the set of slots has fewer than seven slots 312 on. In an in 15 and 16 In the illustrated exemplary embodiment, the set has four slots 312 on.

Every slot 312 is sized for a radial part 34 of the fitting 10 to take a longitudinal displacement of the connector fitting 10 to prevent, as described in detail below. Every slot 312 should have a rectangular shape. The slots 312 extend through both walls 308 of the owner 302 and open in the central channel 306 , The width of each slot 312 (Measured in the longitudinal direction) should be slightly larger than the longitudinal measured width of a radial part 34 of the connector fitting 10 , so that the slot 312 a radial part 34 record as described below.

Every slot 312 has a height measured transversely between an upper edge of the longitudinal wall 308 and the bottom of the central channel 306 , The height of the slot 312 should be about the width of the radial part 34 same, so that the radial part 34 not in the transverse direction from the holder 302 protrudes.

As an alternative, the slots 312 be replaced by projections (not shown) extending from the longitudinal wall 308 in the central channel 306 extend. If multiple projections are used, the radial part becomes 34 placed between adjacent protrusions. As will be understood by those skilled in the art, the width of the central channel may need to be 306 be increased to the width of the radial part 34 to pick up if tabs instead of slots 312 be used.

The top edge of the longitudinal wall 308 has a series of bevels 316 on, each one to a slot 312 is beveled. That is, the portion of the top edge of the longitudinal wall 308 that have a slot 312 surrounds, contains a pair of bevels 316 , with a bevel 316 on each side of the slot 312 located. The bevels 316 are down to the slot 312 beveled to the insertion of the radial part 34 of the connector fitting 10 in the slot 312 to facilitate.

The holder 302 is made of a relatively rigid plastic material (eg polycarbonate), but is somewhat flexible so that the connector fitting 10 the upper edges of the longitudinal walls 308 pushes outward when a health professional pushes the connector fitting 10 in the central channel 306 of the owner 302 suppressed. If the fitting piece 10 in the middle channel 306 sits, snapping the tops of the walls 308 transversely inwards to their starting position, around the fitting piece 10 in the holder 302 to hold on securely.

An adhesive desirably holds the holder 302 on a basis pad 304 firmly. Alternatively, the holder 302 on the basic edition 304 by non-adhesive means (eg embedding or otherwise weaving in the holder 302 in the basic edition 304 ).

basic edition

Continue with reference to 15 and 16 exists the flexible basic edition 304 from a laminate structure with an upper foam layer 318 (eg, closed cell polyethylene foam) and a lower adhesive layer 320 , The lower adhesive layer 320 also forms the bottom surface 322 the basic edition 304 , The lower surface 322 is desirably a medical grade adhesive and may optionally be diaphoretic or nondiaphoretic depending on the application. Such an adhesive-backed foam may be obtained from Avery Dennison of Painsville, Ohio. Although not shown, it is understood that the basic edition 304 as a supplement to the adhesive layer 320 Sewing holes may have to the base pad 302 additionally to be fixed to the skin of the patient.

In an alternative embodiment, a hydrocolloid adhesive may advantageously be based on the base 304 used to attach the base pad to the skin of the patient. The hydrocolloid adhesive is less prone to bleed the skin of a patient when it is removed. This may be particularly important in patients whose skin is more sensitive or more fragile, such as those with a collagen deficiency.

A surface of the upper foam layer 318 represents an upper surface of the base pad 304 The upper surface can be made by corona treatment of the foam layer 318 roughened with a low electrical charge. The roughened or porous surface may increase the quality of adhesion between the base pad 304 and the holder 302 and the hose clamp 328 improve. As an alternative, the flexible base pad 304 a medical grade lower adhesive layer, an inner foam layer, and an upper paper or other fabric or composite layer.

A removable paper or plastic backing 323 desirably covers the lower adhesive layer 322 before use. The backsheet 323 is preferably tear resistant and is divided into several pieces to attach the base pad 304 to facilitate the patient's skin. Desirably, the backsheet is along the centerline of the flexible base pad 304 Divided to only half of the lower adhesive surface 322 to expose at once. The backsheet 323 Also advantageously extends over at least one edge of the base pad 304 to remove the carrier layer from the adhesive layer 322 to facilitate.

One or more tabs 325 Can on a section of the backsheet 323 be appropriate, which is about the flexible base pad 304 extends beyond. In an exemplary embodiment, the tabs have 325 the same laminate structure as the flexible base pad 304 , The tabs 325 can from the paper backing layer 323 exist, extending beyond the edge of the base pad 304 extends beyond. The tabs 325 may also include hints in the form of dots, words, figures, or the like, about the application of the fingers in removing the backsheet 323 from the basic edition 304 display.

The tabs 325 Of course, they can be implemented in different configurations. For example, the tab need not be located along a centerline of the base pad; rather, the tab may be disposed along any line of the base pad to facilitate application of the base pad to the skin of the patient at a particular location. For example, an area of the skin of a patient having an abrupt curvature, such as at a joint, may require the flap to be toward one of the lateral ends of the base pad 304 and not aligned along the centerline.

A nurse or other medical professional gathers a tab 325 and loosens the backsheet 323 from one half of the lower adhesive layer 322 from. The tab eliminates the need for the nurse to pluck at a corner edge or other segment of the backing to separate the backing from the adhesive layer. Then the nurse places the lower layer 322 on the patient's skin, around the base pad 304 to stick to the patient. A slight pressure on the top layer 318 provides good adhesion between the base edition 304 and the patient's skin. The basic edition 304 Its flexibility adapts to the contours of the current surface on which the base pad 304 sticks to. The nurse then repeats this process for the other half of the base pad 304 , As an alternative, the nurse can do the backsheet 323 completely off the base pad 304 remove before putting the base pad 304 attached to the patient's skin.

The basic edition 304 desirably has a recess 324 which are distal to the position of the holder 302 on the basic edition 304 and positioned near the point of insertion of the needle or other medical dwell article. The recess 324 is designed to allow a visual inspection of the induction site.

The basic edition 304 should be hints 326 in the form of an arrow indicating the correct orientation of the base pad 304 in relation to the introductory office. Even though 15 and 16 illustrate the hints in the form of an arrow, it is conceivable that other forms of clues could be used, for example, but not limited to, words or other graphics. The hints 326 should point in the proximal direction to the needle or otherwise the correct location of the base pad 304 with respect to the needle or other proximal accessory to the adapter 12 Show.

In an exemplary embodiment, the laminate structure becomes the base pad 304 preferably by rolling a paper tape, such as a microporous viscose tape, as a 3M MIKRO-PORE tape (part no 1530 ) may be applied to a medical grade polyvinyl chloride foam tape such as that available from 3M (article number 9777L). The foam tape preferably contains the lower cover layer or backing layer 323 , The basic edition 304 and the tabs 325 are then punched out of the laminated foam and paper web. The backsheet 323 However, between the tabs and the base pad should not be divided, so that the tabs 325 on the backsheet, which is the adhesive section 322 the basic edition 304 covering, remain attached. The backsheet 323 will then be along the centerline of the base pad 304 and between the tabs 325 cut into two pieces.

hose clamp

15 and 16 also illustrate a hose clamp 328 , The clamp 328 holds the medical management 14 so tight that a safety loop is formed, as known in the art.

The hose clamp 328 has a plate-like base 330 that on the basic edition 304 liable or embedded in it. The hose clamp 328 can on both sides of the holder 302 on the basic edition 304 be arranged to allow a left-side or right-side bracket. The anchoring system 300 may further comprise a second hose clamp (not shown) located on the other side of the holder 302 with respect to the first hose clamp 328 located.

The clamp 328 defines a channel 332 having a generally circular cross-sectional configuration that is shortened to have an upper opening 334 forms. The diameter of the channel 332 should be slightly smaller than the diameter of the medical line 14 to ensure a secure connection. The channel 332 decreases when applying gentle pressure or by pulling on the wire 14 in or through the opening 334 of the hose clamp 328 a section of the medical administration 14 through the opening 334 on, as explained below. The clamp 328 encloses an essential section of medical management 14 if the medical management 14 within the channel 332 is positioned.

The top of the channel may be tapered ends 336 at the proximal and distal ends of the cutout 328 exhibit. Each tapered end 336 forms a smooth transition between the side edge of the channel 332 and the upper edge and tapers in the lateral width from the side edge to the center of the hose clamp 328 , The tapered ends 336 contribute to the medical management 14 in the channel 332 to lead when a medical professional is the medical director 14 in the clamp 328 moves in. The specialist must be the leader 14 Do not squish it in the clamp 328 insert. In addition, the gloves of the health professional remain when inserting the lead 14 not in the clamp 328 stuck, as is normally the case, when necessary, the line 14 squeeze them into the clamp 328 insert.

slide clamp

In 16 has the anchoring system 300 desirably in addition a sliding clamp 338 on to the fluid flow through the medical line 14 to regulate, as is known in the art. the clamp 338 has an opening at one end 340 on that the medical line 14 receives, and has at the opposite end a slotted flap 342 on. the clamp 338 is generally forked and consists of a pair of prongs 344 that the opening 340 form. The medical management 14 snaps between the tines 344 and in the opening 340 one that is slightly larger in diameter than the medical line 14 ,

The tines 344 approach towards the slit flap 342 each other to a tapered slot 346 to form, which is in the opening 340 opens into it. The tines 344 pinch the medical line 14 if the medical line 14 in the slot 346 is positioned to block the fluid flow. the clamp 338 but can be on the medical line 14 move when the line 14 in the opening 340 is positioned.

finger platform

Regarding 15 and 16 extends a finger platform 348 from the side walls 308 of the owner 302 , The finger platform 348 can be on the base 304 on both sides of the holder 302 to allow right or left attachment. The anchoring system 300 may further comprise a second finger platform (not shown) located on the other side of the holder 302 with respect to the first finger platform 348 located. The finger platforms 348 are sized and configured for a nurse to hold 302 can press against the skin of the patient when the connector fitting 10 is pulled up or if the fitting 10 from the holder 302 is disconnected.

The components of the anchoring system 300 can except the basic edition 304 (ie holder 302 , Hose clamp 328 , Sliding clamp 338 and finger platform 348 ) be constructed in many different ways, which is known in the art. For example, each individual component may be integrally molded, such as by injection molding or hot working. The components are preferably made of a durable, flexible material and more preferably are made of a generally inert, non-toxic material. In a preferred embodiment, the plastic components are shaped such as polycarbonate, polyvinyl chloride, polypropylene, polyurethane, tetrafluoroethylene (z. B. Teflon ^®), polytetrafluoroethylene (also PTEF called), acetal (eg. B., DELRIN ^®), chlorotrifluoroethylene (eg KEL- ^F® ), nylon or other polymers.

attachment a connector using the anchoring system

The following description of the application method will be made with reference to FIG 15 and 16 and initially in connection with intravenous catheterization. However, as the following description illustrates, it will be understood that the anchoring system 300 can be applied to other catheterization procedures as well.

A nurse or other health care professional usually begins the catheterization procedure by positioning the catheter at a desired location over a vein. The medical professional guides a needle or other pointed instrument through a cannula portion of the adapter 12 and at a desired angle of entry into the skin of the patient. For intravenous purposes, the needle usually has an entry angle of about 7 °.

The distal end of the needle is advantageously pre-fitted with a nut adapter 12 connected by the Luer type.

The nurse attaches the proximal section 30 of the connector fitting 10 in the adapter 12 , as described above.

The nurse removes the paper backing 323 , which at first has the adhesive base 322 the basic edition 304 covered, and attached the base pad 304 near the indwelling needle on the skin of the patient. In particular, the nurse grasps the backsheet tab 325 directly on the holder 302 , The nurse then pulls on the tab 325 and dissolves the backsheet from one half of the lower adhesive layer 322 from. The nurse positions the slot 324 the basic edition 304 around the adapter 12 , where the instruction notes 326 (eg a display arrow) in the direction of the needle. The nurse then lays the lower layer 322 on the patient's skin, around the base pad 304 to be attached to the patient. Light pressure on the upper layer 318 provides good adhesion between the base edition 304 and the patient's skin safely. The basic edition 304 Fits due to its flexibility the contours of the limited surface on which the base pad 304 sticks to. The nurse then repeats this process for the other half of the base pad 304 , As an alternative, the nurse can do the backsheet 323 completely off the base pad 304 remove before the pad 304 attached to the skin of the patient.

The nurse straightens the radial part 34 of the connector fitting 10 on the series of holder slots 312 out. Then the nurse snaps the fitting 10 in the holder 302 one. This is the fitting piece 10 between the longitudinal walls 308 of the owner 302 pressed. If the nurse is the fitting piece 10 in the holder 302 push, lead the beveled edges 316 around the slots 312 the longitudinal wall 308 the radial part 34 in one of the slots 312 ,

As described above, the upper opening has 310 of the canal 306 measured in the transverse direction has a smaller width than the diameter of the elongated body 20 of the fitting 10 , The side walls 308 are thereby deflected outwards in the transverse direction. When the elongated body 20 of the fitting 10 in the middle channel 306 of the owner 302 rests, the sidewalls fast 308 back to the fitting piece 10 to be locked in place. The walls 308 of the owner 302 thus prevent unintentional transversal and transverse movement of the fitting 10 with respect to the patient.

The execution of the holder 302 offers many different positions in which the fitting piece 10 in the holder 302 can be fixed; this is the use of the holder 302 not process or position dependent. That means a nurse or other health professional can use the fitting 10 just in the holder 302 regardless of the relative positions of the fitting 10 and a specific slot 312 , The radial part 34 is due to the beveled edges 316 in one of the series of slots 312 introduced, provided the part 34 somewhere over the slots 312 is positioned.

As 16 The nurse also has a safety loop in the medical line 14 as is known to those skilled in the art, and form the safety loop by inserting a portion of the conduit 14 in the hose clamp 328 attach to the patient. The safety loop absorbs any tension on the medical line 14 is applied to prevent the connector fitting 10 and / or on the adapter 12 is pulled.

Those skilled in the art will appreciate that the technique described above for attaching the connector system to the anchoring system 300 Just as well can be applied to connector systems where the union nut 50 and the radial part 34 on the adapter 12 are arranged, such as those in 14 illustrated embodiment. In these cases, the adapter 12 directly on the holder 302 of the anchoring system 300 attached. However, the radial part becomes 34 in one of the slots 312 of the owner 302 fastened in the same way as described above with reference to 15 and 16 described.

In addition, those skilled in the art will recognize that the techniques described above for loosening the connector fitting 10 from the adapter 12 with the technique of attaching the connector system to the anchoring system 300 can be combined.

The set forth above various embodiments of the connector fitting according to the invention Thus, a means for connecting a connector fitting with an adapter and easy release the medical lead from the adapter using the union nut ready. The union nut is pushed back against the radial part and Can be used to power of the fingers of the medical To transfer specialist to the connector fitting, to disconnect it from the adapter.

Of course, it should be understood that not necessarily all of these objects or advantages can be achieved with each and every embodiment of the invention. For example, it will be appreciated by those skilled in the art that the invention can be practiced or practiced to achieve or optimize an advantage or group of advantages as described herein without necessarily achieving other objects or advantages as described herein written or suggested.

In addition, those skilled in the art will recognize the interchangeability of various features with various embodiments. For example, the shape of the socket and the radial part of one of the in 8A to 12B illustrated alternative embodiments and be applied to a connector system in which the nut is on the adapter, as in 14 shown. In addition to the variations described herein, one skilled in the art can mix and match other known equivalents for each feature to make releasable connector systems in accordance with the principles of the present invention.

Even though this invention in connection with certain preferred embodiments and examples, the skilled person will understand that yourself the invention over the embodiments disclosed in detail on other alternative embodiments and / or applications of the invention and obvious modifications and equivalents thereof extends. Thus, it is intended that the scope of the disclosure herein be disclosed Invention is not disclosed by the specific ones described above Embodiments are limited should, but only determined by unbiased reading of the appended claims should be.

Claims (24)

Detachable medical lead connector system comprising: an adapter ( 12 . 210 ) with a tubular section ( 13 ); a connector fitting ( 10 . 212 ) with an elongated body ( 20 . 220 ), at least a portion of which is adapted to fit into the tubular section ( 13 ) of the adapter ( 12 . 210 ) and at least one radially extending part ( 34 . 234 ) lying on the elongated body ( 20 ), wherein the at least one radially extending part ( 34 . 234 ) has an outer cross section, wherein at least one contact surface on the circumference of the radially extending part ( 34 . 234 ) is arranged; and a union nut ( 50 ) having a generally tubular body which is slidable and rotatable on the elongate body ( 20 . 220 ) of the connector fitting ( 10 . 212 ), and a version ( 60 ), distally on the union nut ( 50 ) having an internal cross section which in its shape corresponds to the external cross section of the at least one radially extending part ( 34 . 234 ), the version ( 60 ) has at least one contact surface which is proximal to the distal end of the union nut ( 50 ), wherein the at least one contact surface is configured and arranged with the at least one contact surface of the radially extending part (10). 34 . 234 ), if the version ( 60 ) at least a portion of the radially extending part ( 34 . 234 ) receives both axial and rotational forces between the union nut ( 50 ) and the connector fitting ( 10 . 212 ) transferred to. A connector system according to claim 1, further comprising a holder ( 302 ) with a channel ( 306 ), which extends through the holder ( 302 ) extends along a longitudinal axis, and at least one slot ( 312 ) having the at least one radially extending part ( 34 . 234 ) of the connector fitting ( 10 . 212 ) receives the fitting ( 10 . 212 ) in the appropriate position on the holder ( 302 ). A connector system according to claim 1, wherein the adapter ( 12 . 210 ) a first screw thread ( 18 . 200 ), which on an outer surface of the tubular portion ( 13 ) is arranged, and the union nut ( 50 ) a second screw thread ( 28 ), which on an inner surface of the union nut ( 50 ) is arranged. Connector system according to claim 3, wherein the union nut ( 50 ) is slidable between at least one proximal position and a distal position and wherein the second screw thread ( 28 ) of the union nut ( 50 ) is configured with the first screw thread ( 18 . 200 ) of the adapter ( 12 . 210 ) when the section ( 13 ) of the connector fitting ( 10 . 212 ) in the tubular section ( 13 ) of the adapter ( 12 . 210 ) and the union nut ( 50 ) is in the proximal position, and wherein the socket ( 60 ) of the union nut ( 50 ) is configured with the radially extending portion (FIG. 34 . 234 ) of the connector fitting ( 10 . 212 ) to engage when the union nut ( 50 ) in the distal position. Connector system according to claim 4, wherein the engagement between the union nut ( 50 ) and the radially extending part (FIG. 34 . 234 ), when the union nut ( 50 ) is in the distal position, a transmission of a distally directed force from the nut ( 50 ) on the connector fitting ( 10 . 212 ) and a transmission of torque from the nut ( 50 ) on the connector fitting ( 10 . 212 ). A connector system according to claim 1, wherein a largest radius of the radially extending part (Fig. 34 . 234 ) is greater than a smallest radius of the socket ( 60 ). A connector system according to claim 1, wherein the adapter ( 12 . 210 ) is disposed at the distal end of a catheter. A connector system according to claim 1, wherein the connector fitting ( 10 ) at the proximal end of a medical line ( 14 . 16 ) is arranged. A connector system according to claim 1, wherein the connector fitting ( 10 . 212 ) a second radially extending part ( 44 ) provided with a slot ( 312 ) of an anchoring system ( 300 ) cooperates. Connector system according to claim 1, wherein the engagement between the union nut ( 50 ) and the connector fitting ( 10 . 212 ), when the union nut ( 50 ) in the distal position, a rotational movement between the union nut ( 50 ) and the connector fitting ( 10 . 212 ) transmits, so that the union nut ( 50 ) and the connector fitting ( 10 . 212 ) rotate together. Connector system according to claim 1, wherein the engagement between the union nut ( 50 ) and the connector fitting ( 10 . 212 ), when the union nut ( 50 ) in the distal position, a distal movement of the union nut ( 50 ) relative to the connector fitting ( 10 . 212 ) prevented. A connector system according to claim 1, wherein the outer cross section of the at least one radially extending part (FIG. 34 ) has a generally hexagonal shape. Connector system according to claim 1, wherein the inner cross section of the socket ( 60 ) of the union nut ( 50 ) has a generally hexagonal shape. Connector system according to claim 1, wherein the inner cross section of the socket ( 60 ) of the union nut ( 50 ) has a star shape. Connector system according to claim 14, wherein the inner cross section of the socket ( 60 ) of the union nut ( 50 ) has twelve teeth. A connector system according to claim 1, wherein the outer cross-section of the radially extending part (16) 34 . 234 ) radially changes around its circumference and wherein the inner cross section of the socket ( 60 ) changes radially around its circumference. Connector system according to claim 1 in combination with a holder ( 302 ) with a channel ( 306 ), which extends through the holder ( 302 ) extends along a longitudinal axis, and a plurality of protrusions extending into the channel ( 306 ) and are configured to sandwich, between adjacent protrusions, the radially extending portion (FIG. 34 . 234 ) of the connector fitting ( 10 . 212 ) to hold the fitting in the appropriate position on the holder ( 302 ). Connector system according to claim 1, wherein the engagement between the union nut ( 50 ) and the connector fitting ( 10 . 212 ), when the union nut ( 50 ) in the distal position, a rotational movement between the union nut ( 50 ) and the connector fitting ( 10 . 212 ) prevented. A connector system according to claim 1, wherein the radially extending part (Fig. 34 . 234 ) has a radius that extends around at least a portion of the elongated body ( 20 . 220 ) changes. A connector system according to claim 1, wherein the elongate body ( 20 . 220 ) has an outer radius R ₁ , the outer cross section of the at least one radially extending part ( 34 . 234 ) has a maximum radius R ₂ and the inner cross section of the union nut ( 50 ) has an outer radius R ₃ and wherein the radii R ₁ , R ₂ and R ₃ are dimensioned such that R ₃ - R ₂ <R ₂ - R ₁ applies. The connector system of claim 1, wherein the received portion of the radially. extending part ( 34 . 234 ) all around an axis of the elongated body ( 20 . 220 ) and wherein the inner cross section of the socket ( 60 ) changes radially around its circumference. A connector system according to claim 1, wherein the outer cross section of the at least one radially extending part (FIG. 34 . 234 ) forms a polygon. Connector fitting ( 10 . 212 ) according to claim 1, wherein the at least one contact surface of the socket ( 60 ) in an interior of the socket ( 60 ) is arranged. A connector system according to claim 1, wherein the socket ( 60 ) has a plurality of contact surfaces and the radially extending part ( 34 . 234 ) has a plurality of contact surfaces and wherein the plurality of contact surfaces of the socket ( 60 ) are configured with multiple contact surfaces of the radially extending part ( 34 . 234 ), if the union nut ( 50 ) both axial and rotational forces on the connector fitting ( 10 . 212 ) transmits.